Gears 5 hangs on launch (Bisected regression)

[K0bin]

First initially reported by @GloriousEggroll. The game hangs before presenting a single frame.

The game needs ProtonGE to work around EAC for the single player campaign.

I've bisected the hang down to df1829e40770482597ab168559ef2d68ab3ec707 and confirmed that by reverting the commit on top of master.

df1829e40770482597ab168559ef2d68ab3ec707 is the first bad commit
commit df1829e40770482597ab168559ef2d68ab3ec707
Author: Derek Lesho <[email protected]>
Date:   Fri Jul 15 15:35:42 2022 -0400

    vkd3d: Implement ID3D12Fence sharing on top of D3D12-Fence exportable Vulkan timeline semaphores.
    
    Signed-off-by: Derek Lesho <[email protected]>

 libs/vkd3d/command.c       | 460 ++++++++++++++++++++++++++++++++++++++++++---
 libs/vkd3d/device.c        |  90 ++++++++-
 libs/vkd3d/vkd3d_private.h |  61 +++++-
 libs/vkd3d/vulkan_procs.h  |   7 +
 4 files changed, 579 insertions(+), 39 deletions(-)

There's also this interesting warning in the log file:

0130:fixme:d3d12_shared_fence_SetEventOnCompletion: Signaling events on shared fence completion not supported.